score:3
I may be headed that way myself as part of a relief mission for the JCWI. I would recommend the live Budapest feed on Twitter...
It is not an 'official' source and the feed is intermixed with comments that some may find indecorous (hence my redaction). But there is enough 'live' information to make it worthwhile. The feed includes 'live' updates from the BBC and other credible sources.
You may also find that the feed for Budapest Trains contains very specific information about what to expect on a moment-by-moment basis...